<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
    h1 {
        font: 400 25px "宋体";
    }
    /* 选择器{font: font-style font-weight font-size/line-height font-family } */
    </style>
</head>
<body>
    <h1>字体样式</h1>
</body>
</html>